Long serving forward Matt Mustchin has been called up for Scotland’s two Test summer Tour of Argentina and the 31-year-old lock will be speaking exclusively to this week’s Edinburgh ezine about the honour. Meanwhile, Simon Webster, the 33-times-capped winger has also been handed a call-up after proving his fitness to the Scotland medical staff after missing the tail-end of the season with a hamstring problem. Scotland team Doctor James Robson said: ‘simon passed the test with flying colours and was well-pleased with the progress he’s made. Scotland coach Frank Hadden said: ‘simon has had a difficult season with injury but is now an experienced internationalist and Im delighted he is fit to travel.Remember in order to read Matt’s thoughts on the call-up subscribe to the Edinburgh ezine for FREE today and get closer to the team that everyone is talking about.Meanwhile in the pack, Mustchin, who qualifies for Scotland through the IRB’s three year residency requirement, has been introduced to fill one of the three vacancies at lock. Mustchin joined Edinburgh in 2005 and made his 50th appearance for the team earlier this season, Hadden noting that his abrasive qualities will complement our other second-row forwards on this tour._Mustchin said: Frank signed me for Edinburgh in 2005 and it’s very much home for me and my family. I love the city and Ive enjoyed my rugby here and being involved in coaching at club level with Murrayfield Wanderers. As far as the two remaining vacancies are concerned, Hadden is asking Glasgow Warriors captain Alastair Kellock and Edinburgh lock Craig Hamilton to attend pre-tour training at Murrayfield next week._Hadden is also continuing to monitor closely the possible availability of Scotland’s most-capped player, Scott Murray._Murray, now with Montauban in France, has two home league matches against Bayonne and Clermont over the next two weekends and has expressed optimism that if both matches are won he may be released for the tour. A final decision on the two vacancies will be made next week.